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3-1
v1.0, November 2007
Chapter 3
Troubleshooting
Troubleshooting Chart
The following table lists symptoms, causes, and solutions of possible problems.
Table 3-1. Troubleshooting Chart
Problem Cause Solution
Power LED is off. No power is received Check the power cord connections for the
switch at the switch and the connected
device.
Make sure that all cables used are correct
and comply with Ethernet specifications.
Link LED is off or intermittent. Port connection is not
working.
Check the crimp on the connectors, and
make sure that the plug is properly inserted
and locked into the port at both the switch
and the connecting device.
Make sure that all cables used are correct
and comply with Ethernet specifications.
See “Technical Specifications” in
Appendix A.
Check for a defective adapter card, cable,
or port by testing it in an alternate
environment where all products are
functioning.
File transfer is slow, or
performance degradation is a
problem.
Half or full duplex setting on
the switch and the connected
device are not the same.
Make sure that the attached device is set to
auto negotiate.
Check the system message log.